Performance of porous asphalt mixture with various additives. Issue Volume 19:Issued 4(2018) (3rd April 2018)

• Record Type: Journal Article
• Authors: Ma, Xiang; Li, Qiang; Cui, Yu-Chao; Ni, An-Qi
• Is Part Of: International journal of pavement engineering. Volume 19:Issued 4(2018)
• Page Start: 355
• Page End: 361
• Publication Date: 2018-04-03
• Subjects: Porous asphalt mixture -- open graded friction course -- high-viscosity binder -- additive -- performance tests; Pavements -- Design and construction -- Periodicals; Highway engineering -- Periodicals; 625.805
• DOI: 10.1080/10298436.2016.1175560
• Languages: English
• ISSNs: 1029-8436

Abstract

Abstract: The objective of this study is to evaluate the approaches to improve the durability and strength of the porous asphalt through laboratory testing. Porous asphalt specimens were prepared using three types of binders: high-viscosity binder (HVB), PG76-22 and PG70-22. Various additives: fibre, hydrated lime and DBS polymer, were utilised in the porous asphalt. Comprehensive laboratory tests, including strength test, binder draindown test, Cantabro abrasion test, moisture susceptibility test, rutting test, thermal stress restrained sample test, and permeability test, were conducted. It is found that HVB significantly improved the overall performance of the porous asphalt; DBS additive improved its high-temperature performance, but lowered the cracking resistance at low temperature as well as the durability; fibre enhanced its durability and anti-cracking performance at low temperature; hydrated lime improved its moisture stability while weakening its durability. It is concluded that HVB and polyester fibre should be used in all porous asphalt; DBS additive is good for porous asphalt in high-temperature areas, and hydrated lime can be added to porous asphalt in rainy areas.